Quote:
Originally Posted by TorqueMan777
Can you elaborate? I've been wondering why they went with that design.
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From my experimenting with different size front pipes I've found that the larger diameter actually produced more mid-range torque and throttle response without impeding flow or top end gains compared to a straight equal diameter exhaust from the the overpipe to catback. I really don't understand the physics behind why the sudden increase in diameter right in the middle of the exhaust has that effect on this car, but results are results. I'm not sure why it works, but I know it works. lol
Edit: Here you go @
TorqueMan777 Stock FP vs 63mm FP vs 70mm FP
It's not quite a 3" diameter, but I've no doubt the even larger pipe will have a similar result as I got with my 70mm pipe.
and E85 vs 91 petrol while I'm at it
